(Nd, Dy)-Fe-B 분말의 소결특성 및 상변화 연구
Sintering Behavior and Phase Analysis of (Nd, Dy)-Fe-B Powder
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초록
In this study, the sintering behavior of (Nd, Dy)-Fe-B powder which fabricated by strip-casting was investigated with various sintering temperatures and holding times. The relative density over 99% could be obtained by both sintering at 1070oC for 1h and sintering at 970oC for 20h. The grain growth was observed in sintered specimen at 1050oC compared to one at 970oC. The isothermal sintering process below 1000oC led to suppress grain growth showing the improved magnetic properties. The phase transformation of Nd-rich was confirmed by X-ray diffraction pattern.
Abstract
In this study, the sintering behavior of (Nd, Dy)-Fe-B powder which fabricated by strip-casting was investigated with various sintering temperatures and holding times. The relative density over 99% could be obtained by both sintering at 1070oC for 1h and sintering at 970oC for 20h. The grain growth was observed in sintered specimen at 1050oC compared to one at 970oC. The isothermal sintering process below 1000oC led to suppress grain growth showing the improved magnetic properties. The phase transformation of Nd-rich was confirmed by X-ray diffraction pattern.
참고문헌 (12)
- D. Brown, , J. Magn. Magn.Mater, 248, pp.432~ (2002)
- S. H. Kim, , J. Korean Powder Metall. Inst, 15, pp.263~ (2008)
- 김훈섭, "Convergent 열처리를 통한 Nd23Dy10Fe64TM2B1 소결자석의 보자력 향상", 한국분말야금학회지, 17(1), pp.1~6 (2010), 한국분말야금학회
- S. H. Kim, , J.Korean Powder Metall. Inst., 15, pp.531~ (2008)
- S. J. Chu, "Ultra-strong permanent magnet materials" (1999), Ulsan Univ. Pub
- D. Lemarchand, , IEEE Trans.Magn, 26, pp.2649~ (1990)
- Y. Shinba, , J.Appl. Phys, 97, pp.053~504 (2005)
- F. Vial, , J. Magn. Magn. Mater, 1329, pp.242~2453 (2002)
- M. Matsuura, , J.Appl. Phys, 105, pp.07A~741 (2009)
- R. Ramensh, , J. Appl. Phys, 70, pp.6453~ (1991)
- B. D. Cullity, "Introduction to Magnetic Materials" (1972), Addison-Wesley
- S. Nishio, , J. Jpn. Inst. Met, 72, pp.1010~ (2008)